Quinn Coan was out celebrating his 21st birthday on Nov. 1 with
friends from Cambridge when "eight or nine people" approached him
around 1 a.m. to ask for directions, he told the Cambridge News.

Coan was coming from dinner at Cambridge and was still wearing
his traditional academic robes, which apparently led to trouble
with the gang, he said:

They started to laugh about the gown and made a remark about
Harry Potter. As we walked away I was punched on the right side
of my head and then again and I fell to the ground. My
friends came to my side and then one of the group came over and
just stamped on my head and broke my jaw ... I really think
it was because I was wearing a gown. We didn't approach them. It
was a totally unprovoked attack.

After the attack, Coan spent the night in a local hospital and
was treated for a black eye and a fractured jaw. He told the
Cambridge News that he now suffers from headaches and has had
trouble concentrating.

Local detectives released images this week of four people
believed to be connected to the assault, and an investigation is
ongoing.